Shandong Jingwei Steel Manufacturing Co., Ltd.
                                                                                                           
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Since 2021
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HDP High Durability Polyester PPGI Steel Coil Z275 Coastal Grade Anti-Corrosion For Offshore Seaport Warehouse Building

Price Negotiable
Price: 550-850 USD/Ton
MOQ: 3 Tons
Delivery Time: 15-25 Working Days
Brand: ECER
Product Description

Specifically formulated for construction in coastal and marine environments where elevated chloride deposition demands maximum corrosion protection. HDP technology advances beyond SMP by incorporating higher molecular weight polyester resins with specialized cross-linking agents and advanced UV stabilizers, achieving 3-4 times the gloss retention of standard PE. The three-layer architecture with zinc phosphate conversion coating, chromate-free primer, and HDP topcoat has been validated through 1500+ hours of neutral salt spray testing per ISO 9227.

Key Features
  • HDP Coating Technology: High durability polyester with advanced UV stabilization delivers 3-4x better gloss retention, extending maintenance intervals in high-UV coastal environments.
  • Superior Salt Spray Resistance: Validated through 1500+ hours of ISO 9227 testing with no blistering and minimal creep, confirming marine atmosphere suitability.
  • Z275 Heavy Zinc Protection: 275 g/m² double-side zinc coating provides robust sacrificial protection at cut edges and punched holes in coastal service.
  • Chromate-Free Primer: Environmentally compliant corrosion-inhibiting technology meets EU REACH and RoHS requirements while maintaining anti-corrosion performance.
  • Three-Layer Architecture: Conversion coating, primer, and HDP topcoat work synergistically through multiple barrier and inhibition mechanisms.
  • Coastal Climate Optimized: Formulation accounts for combined UV radiation, salt deposition, high humidity, and wind-driven rain typical of coastal construction sites.
Technical Specifications
ParameterSpecification
Substrate GradeDX51D+Z / DX52D+Z
Thickness Range0.30mm - 1.20mm
Width Range600mm - 1250mm
Zinc CoatingZ150 - Z275 g/m²
Top CoatingHDP 20-25 μm
Primer7-10 μm
Salt Spray (ISO 9227)1500+ Hours
Service Life15-20 Years Coastal
Coil Weight3-8 tons
Applications

Seaport warehouses and terminals, waterfront commercial developments, coastal resorts and hotels, fish processing plants, offshore platform service buildings, desalination plants, marina facilities. Also suitable for high-humidity tropical regions and chemical plant auxiliary buildings.

Packaging & Quality Assurance

VCI film with aluminum foil moisture barrier, desiccant bags inside coil eye, hardened steel edge protectors, fumigated ISPM 15 pallets with plastic overwrap. Documentation includes ISO 9227 1500h, ISO 11997-1 cyclic corrosion, ISO 6270-1 humidity 1000h, ISO 3231 sulfur dioxide resistance. ISO 9001 and ISO 14001 certified.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shandong Jingwei Steel Manufacturing Co., Ltd.
Location Dongchangfu District Industrial Park, Liaocheng City, Shandong Province, China
Contact Person Emma jiang

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